Fecha de publicación: 02/08/2022 Fuente: WIPO "hemp" The invention relates to the technical field of China-hemp long hemp fiber preparation, and discloses a China-hemp long hemp fiber preparation process which comprises the following steps: step 1, peeling, namely peeling China-hemp to obtain peeled China-hemp, step 2, soaking, namely soaking the peeled China-hemp in water for 10 hours to obtain a China-hemp liquid, step 3, degumming, and step 4, drying, thereby obtaining the China-hemp long hemp fiber. The method comprises the following steps of 1, preparing a hemp solution, 2, sequentially adding salt, compound enzyme and a hydrochloric acid solution into the hemp solution for degumming treatment to obtain hemp fibers, 4, air-drying the degummed hemp fibers for 3 hours, and 5, collecting the hemp fibers through a fiber grading and carding device. According to the preparation process of the hemp long fiber, the salt, the compound enzyme and the hydrochloric acid solution are added for degumming treatment with the flax liquid in sequence, the degumming efficiency of hemp is improved, the degumming process is simple, easy to operate, environmentally friendly and efficient, the degumming efficiency is further improved under the cooperation of scrubbing treatment, and the hemp long fiber is more convenient and practical.